Overview
Firma.dev and Qursor are two specialized developer tools that solve very different problems. Firma.dev is an ultra-low-cost e-signature API designed for SaaS platforms that need to embed document signing with white-label branding, compliance, and a developer-first experience. Qursor is a Chrome extension that helps frontend developers and designers inspect UI elements, extract structured context (selectors, styles, fonts, colors), and send that context directly to AI agents to speed up UI fixes and reduce token waste.
Feature Comparison
| Feature | Firma.dev | Qursor |
|---|---|---|
| Primary Use Case | Embedded e-signature API for SaaS | UI inspection & AI context extraction |
| Target Audience | Developers, SaaS teams, startups | Frontend devs, designers, AI users |
| Integration Method | REST API, iFrame, pre-built components | Chrome extension, copy-paste |
| Pricing Model | €0.029/envelope, pay-as-you-go | Free (3 picks/day), $29/yr, $39 lifetime |
| White-Labeling | Fully white-label | Not applicable |
| Compliance | SOC 2, ISO 27001, eIDAS, GDPR | None |
| API / Extensibility | Full REST API, webhooks, team management | No API; structured context copy |
| Trial / Sandbox | Free sandbox with unlimited test docs | Free tier with 3 picks/day |
| Support | Direct engineer support | Community/self-serve |
Pricing
Firma.dev: €0.029 per envelope (about 3¢), no monthly fees, no contracts, no minimums. Free sandbox with unlimited test documents. Pay only when you send documents for signing.
Qursor: Free tier includes 3 picks per day forever. Yearly plan at $29/year for unlimited picks. Lifetime plan at $39 one-time for unlimited picks. Both paid plans include all features (color picker, font detector, asset download, component copy).
Pros and Cons
Firma.dev
Pros:
- Extremely low cost per envelope (€0.029 vs $4-5 for DocuSign)
- Developer-first with clean REST API and embeddable components
- Fully white-label, resell-ready for SaaS platforms
- Strong compliance (SOC 2, ISO 27001, eIDAS, GDPR)
- Free sandbox with unlimited test documents
Cons:
- Not designed for individual or non-developer use
- Requires integration effort (API-based)
- Limited to e-signature use case only
Qursor
Pros:
- Instant setup (Chrome extension, no code changes)
- Saves AI tokens by providing structured context instead of screenshots
- Very affordable pricing (free tier, $29/year, $39 lifetime)
- Extracts fonts, colors, spacing, and components from any website
- Useful for designers, developers, and AI-assisted workflows
Cons:
- Limited to browser-based UI inspection (not a full API)
- No compliance or security certifications
- Free tier restricts to 3 picks per day
- No team management or white-labeling features
Verdict
Choose Firma.dev if you need a scalable, compliant, white-label e-signature API for your SaaS product at a fraction of the cost of traditional providers. Choose Qursor if you are a frontend developer or designer who wants to quickly extract UI context for AI agents, saving tokens and reducing guesswork. They serve entirely different purposes, so the best choice depends on your specific workflow.
Firma.dev
Qursor